Camera optical lens

ABSTRACT

Provided is a camera optical lens including first to fifth lenses arranged from an object side to an image side. The camera optical lens satisfies following conditions: 0.95≤f2/f≤2.00; −2.80≤f3/f≤−1.50; 4.12≤(R1+R2)/(R1−R2)≤26.82; 3.20≤R7/R8≤6.00; and 1.80≤d3/d5≤3.50, where f, f2, and f3 respectively denote focal lengths of the camera optical lens, the second lens, and the third lens; R1 and R2 denote curvature radiuses of an object side surface and an image side surface of the first lens; R7 and R8 denote curvature radiuses of an object side surface and an image side surface of the fourth lens; d3 and d5 denote on-axis thicknesses of the second lens and the third lens. The camera optical lens has high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices such as smart phones or digital cameras and camera devices suchas monitors or PC lenses.

BACKGROUND

With the development of camera technology, camera optical lenses arewidely applied in various electronic products, such as smart phones anddigital cameras. For the purpose of portability, people are increasinglypursuing thinner and lighter electronic products, and thus miniaturecamera lenses with good imaging quality therefore have become amainstream in the market.

In order to obtain better imaging quality, the lens that isconventionally equipped in mobile phone cameras adopts a three-piece orfour-piece lens structure. However, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, a five-piece lens structure gradually emerges in lensdesigns. Although the common five-piece lens has good opticalperformance, its settings on refractive power, lens spacing and lensshape still have some irrationality, which results in that the lensstructure cannot achieve a high optical performance while satisfyingdesign requirements for wide-angle and ultra-thin lenses.

Therefore, it is urgent to provide a camera optical lens that has goodoptical performance and satisfies the requirements for large-aperture,wide-angle, and ultra-thin design.

SUMMARY

In view of the above problems, the present disclosure provides a cameraoptical lens, which can solve the problem that conventional cameraoptical lenses are not fully ultra-thinned, large-apertured andwide-angled.

In an embodiment, the present disclosure provides a camera optical lensincluding, from an object side to an image side: a first lens having anegative refractive power, a second lens having a positive refractivepower, a third lens having a negative refractive power, a fourth lenshaving a positive refractive power, and a fifth lens having a negativerefractive power, wherein the camera optical lens satisfies followingconditions: 0.95≤f2/f≤2.00, −2.80≤f3/f≤−1.50, 3.20≤R7/R8≤6.00,4.12≤(R1+R2)/(R1−R2)≤26.82, and 1.80≤d3/d5≤3 0.50, where f denotes afocal length of the camera optical lens, f2 denotes a focal length ofthe second lens, f3 denotes a focal length of the third lens, R1 denotesa curvature radius of an object side surface of the first lens, R2denotes a curvature radius of an image side surface of the first lens,R7 denotes a curvature radius of an object side surface of the fourthlens, R8 denotes a curvature radius of an image side surface of thefourth lens, d3 denotes an on-axis thickness of the second lens, and d5denotes an on-axis thickness of the third lens.

As an improvement, the camera optical lens further satisfies1.50≤d7/d9≤3.00, where d7 denotes an on-axis thickness of the fourthlens, and d9 denotes an on-axis thickness of the fifth lens.

As an improvement, the camera optical lens further satisfies−72.07≤f1/f≤−6.87, and 0.04≤d1/TTL≤0.12, where f1 denotes a focal lengthof the first lens, d1 denotes an on-axis thickness of the first lens,and TTL denotes a total optical length from the object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.

As an improvement, the camera optical lens further satisfies0.09≤(R3+R4)/(R3−R4)≤1.26, and 0.07≤d3/TTL≤0.26, where R3 denotes acurvature radius of an object side surface of the second lens, R4denotes a curvature radius of an image side surface of the second lens,and TTL denotes a total optical length from the object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.

As an improvement, the camera optical lens further satisfies−0.68≤(R5+R6)/(R5−R6)≤1.50, and 0.03≤d5/TTL≤0.11, where R5 denotes acurvature radius of an object side surface of the third lens, R6 denotesa curvature radius of an image side surface of the third lens, and TTLdenotes a total optical length from the object side surface of the firstlens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies0.38≤f4/f≤1.43, 0.70≤(R7+R8)/(R7−R8)≤2.81, and 0.11≤d7/TTL≤0.33, wheref4 denotes a focal length of the fourth lens, d7 denotes an on-axisthickness of the fourth lens, and TTL denotes a total optical lengthfrom the object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies−4.11≤f5/f≤−0.75, 1.35≤(R9+R10)/(R9−R10)≤6.95, and 0.04≤d9/TTL≤0.20,where f5 denotes a focal length of the fifth lens, R9 denotes acurvature radius of an object side surface of the fifth lens, R10denotes a curvature radius of an image side surface of the fifth lens,d9 denotes an on-axis thickness of the fifth lens, and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies FNO≤2.1,where FNO denotes an F number of the camera optical lens.

As an improvement, the camera optical lens further satisfies FOV≥97°,where FOV denotes a field of view of the camera optical lens.

As an improvement, the camera optical lens further satisfies0.53≤f12/f≤3.13, where f12 denotes a combined focal length of the firstlens and the second lens.

The present disclosure has the following beneficial effects. The cameraoptical lens according to the present disclosure can satisfy the designrequirements for wide-angle and ultra-thin while having high opticalperformance and large-aperture, especially suitable for camera lensassembly of mobile phones and WEB camera lenses formed by CCD, CMOS andother imaging elements for high pixels.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1 ;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1 ;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1 ;

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5 ;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5 ;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5 ;

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9 ;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9 ; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9 .

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments.

To make the technical problems to be solved, technical solutions andbeneficial effects of the present disclosure more apparent, the presentdisclosure is described in further detail together with the figure andthe embodiments. It should be understood the specific embodimentsdescribed hereby is only to explain the disclosure, not intended tolimit the disclosure.

Embodiment 1

Referring to FIG. 1 to FIG. 4 , the present disclosure provides a cameraoptical lens 10 according to the Embodiment 1. In FIG. 1 , a left sideis an object side, and a right side is an image side. The camera opticallens 10 mainly includes five lenses, i.e., from the object side to theimage side, including a first lens L1, an aperture S1, a second lens L2,a third lens L3, a fourth lens L4, and a fifth lens L5. A glass filter(GF) is arranged between the fifth lens L5 and an image plane Si, andthe glass filter (GF) can be a glass plate or an optical filter.

In the present embodiment, the first lens L1 has a negative refractivepower, the second lens L2 has a positive refractive power, the thirdlens L3 has a negative refractive power, the fourth lens L4 has apositive refractive power, and the fifth lens L5 has a negativerefractive power.

In the present embodiment, the first lens L1 is made of a plasticmaterial, the second lens L2 is made of a plastic material, the thirdlens L3 is made of a plastic material, the fourth lens L4 is made of aplastic material, and the fifth lens L5 is made of a plastic material.

Here, a focal length of the camera optical lens 10 is defined as f, afocal length of the second lens L2 is defined as f2, a focal length ofthe third lens L3 is defined as f3, a curvature radius of an object sidesurface of the fourth lens L4 is defined as R7, a curvature radius of animage side surface of the fourth lens L4 is defined as R8, an on-axisthickness of the second lens L2 is defined as d3, and an on-axisthickness of the third lens L3 is defined as d5. The camera optical lens10 should satisfy following conditions:0.95≤f2/f≤2.00  (1);−2.80≤f3/f≤−1.50  (2);3.20≤R7/R8≤6.00  (3); and1.80≤d3/d5≤3.50  (4).

The condition (1) specifies a ratio of the focal length f2 of the secondlens L2 to the focal length f of the camera optical lens 10. When f2/fsatisfies such a condition, the refractive power of the second lens L2can be effectively distributed to correct aberrations of the opticalsystem, thereby improving imaging quality.

The condition (2) specifies a ratio of the focal length f3 of the thirdlens L3 to the focal length f of the camera optical lens 10. Thiscondition facilitates improving the performance of the optical system.

The condition (3) specifies a shape of the fourth lens L4. Thiscondition can alleviate deflection of light passing through the lenswhile effectively reducing aberrations.

The condition (4) specifies a ratio of the on-axis thickness d3 of thesecond lens L2 to the on-axis thickness d5 of the third lens L3. Whend3/d5 satisfies the condition, the imaging performance can be improved.

The focal length of the camera optical lens 10 is f, an on-axisthickness of the fourth lens L4 is defined as d7, and an on-axisthickness of the fifth lens L5 is defined as d9. The camera optical lens10 should satisfy a condition of 1.50≤d7/d9≤3.00, which specifies aratio of the on-axis thickness d7 of the fourth lens L4 to the on-axisthickness d9 of the fifth lens L5. This condition is beneficial tocorrecting of the aberrations and improving the imaging quality.

In the present embodiment, the first lens L1 includes an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal lengthof the first lens L1 is defined as f1. The camera optical lens 10 shouldsatisfy a condition of −72.07≤f1/f≤−6.87, which specifies a ratio of thefocal length f1 of the first lens L1 to the focal length f of the cameraoptical lens 10. When the condition is satisfied, the first lens L1 hasan appropriate negative refractive power, thereby reducing aberrationsof the system while facilitating development towards ultra-thin,wide-angle lenses. As an example, −45.04≤f1/f≤−8.59.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 shouldsatisfy a condition of 4.12≤(R1+R2)/(R1−R2)≤26.82, which can reasonablycontrol a shape of the first lens L1, allowing the first lens L1 toeffectively correct spherical aberrations of the system. As an example,6.59≤(R1+R2)/(R1−R2)≤21.46.

An on-axis thickness of the first lens L1 is defined as d1, and a totaloptical length from the object side surface of the first lens L1 to animage plane of the camera optical lens along an optic axis is defined asTTL. The camera optical lens 10 should satisfy a condition of0.04≤d1/TTL≤0.12. This condition can facilitate achieving ultra-thinlenses. As an example, 0.06≤d1/TTL≤0.09.

In the present embodiment, the second lens L2 includes an object sidesurface being convex in a paraxial region and an image side surfacebeing convex in the paraxial region.

A curvature radius of the object side surface of the second lens L2 isdefined as R3, and a curvature radius of the image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 shouldsatisfy a condition of 0.09≤(R3+R4)/(R3−R4)≤1.26, which specifies ashape of the second lens L2. This condition can facilitate correction ofan on-axis aberration with development towards ultra-thin lenses. As anexample, 0.15≤(R3+R4)/(R3−R4)≤1.01.

An on-axis thickness of the second lens L2 is defined as d3, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.07≤d3/TTL≤0.26, which facilitates achieving the ultra-thin lenses. Asan example, 0.11≤d3/TTL≤0.21.

In the present embodiment, the third lens L3 includes an object sidesurface being concave in a paraxial region and an image side surfacebeing concave in the paraxial region.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of the image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 shouldsatisfy a condition of −0.68≤(R5+R6)/(R5−R6)≤1.50, which specifies ashape of the third lens L3, and conducive to the shaping of the thirdlens L3. This condition can alleviate the deflection of light passingthrough the lens while effectively reducing aberrations. As an example,−0.42≤(R5+R6)/(R5−R6)≤1.20.

An on-axis thickness of the third lens L3 is defined as d5, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.03≤d5/TTL≤0.11, which facilitates achieving ultra-thin lenses. As anexample, 0.04≤d5/TTL≤0.09.

In the present embodiment, the fourth lens L4 includes an object sidesurface being concave in a paraxial region and an image side surfacebeing convex in the paraxial region.

A focal length of the camera optical lens 10 is f, and a focal length ofthe fourth lens L4 is f4. The camera optical lens 10 further satisfies acondition of 0.38≤f4/f≤1.43, which specifies a ratio of the focal lengthf4 of the fourth lens L4 to the focal length f of the camera opticallens 10. With the appropriate distribution of the refractive power, abetter imaging quality and a lower sensitivity of the system can beachieved. As an example, 0.61≤f4/f≤1.15.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 shouldsatisfy a condition of 0.70≤(R7+R8)/(R7−R8)≤2.81, which specifies ashape of the fourth lens L4. This condition can facilitate correction ofan off-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, 1.12≤(R7+R8)/(R7−R8)≤2.25.

An on-axis thickness of the fourth lens L4 is defined as d7, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.11≤d7/TTL≤0.33. This can facilitate achieving ultra-thin lenses. As anexample, 0.17≤d7/TTL≤0.27.

In the present embodiment, the fifth lens L5 includes an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region.

A focal length of the fifth lens L5 is f5, and the focal length of thecamera optical lens 10 is f. The camera optical lens 10 furthersatisfies a condition of −4.11≤f5/f≤−0.75. Limitations on the fifth lensL5 can effectively make a light angle of the camera optical lens 10gentle and reduce the tolerance sensitivity. As an example,−2.57≤f5/f≤−0.93.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of the image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 shouldsatisfy a condition of 1.35≤(R9+R10)/(R9−R10)≤6.95, which specifies ashape of the fifth lens L5. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, 2.17≤(R9+R10)/(R9−R10)≤5.56.

An on-axis thickness of the fifth lens L5 is defined as d9, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.04≤d9/TTL≤0.20. This can facilitate achieving ultra-thin lenses. As anexample, 0.06≤d9/TTL≤0.16.

In the present embodiment, an image height of the camera optical lens 10is defined as IH. The camera optical lens 10 should satisfy a conditionof TTL/IH≤1.90. This condition can facilitate achieving ultra-thinlenses.

In the present embodiment, an F number of the camera optical lens 10 isFNO, and the camera optical lens 10 should satisfy a condition ofFNO≤2.1, thereby achieving a large aperture.

In the present embodiment, a field of view (FOV) of the camera opticallens 10 is larger than or equal to 97°, thereby achieving a wide angle.

In the present embodiment, the focal length of the camera optical lens10 is defined as f, and a combined focal length of the first lens L1 andthe second lens L2 is defined as f12. The camera optical lens 10 shouldsatisfy a condition of 0.53≤f12/f≤3.13, thereby eliminating aberrationand distortion of the camera optical lens 10, suppressing the back focallength of the camera optical lens 10, and maintaining miniaturization ofthe camera lens system group. As an example, 0.85≤f12/f≤2.50.

In addition, in the camera optical lens 10 provided by the presentembodiment, the surface of each lens is an aspherical surface, which iseasy to be made into a shape other than a spherical surface, to obtainmore control variables for reducing aberrations, thereby reducing anumber of the required lenses. In this way, the total length of thecamera optical lens 10 can be effectively reduced. In the presentembodiment, the object side surface and the image side surface of eachlens are all aspherical surfaces.

Since the first lens L1, the second lens L2, the third lens L3, thefourth lens L4, and the fifth lens L5 have the structure and satisfyparameter relationship as mentioned above, the camera optical lens 10can reasonably allocate the refractive power, spacing and shape of eachlens, and thus can correct various aberrations.

Thus, the camera optical lens 10 can further satisfy design requirementsfor ultra-thin, large aperture, and wide-angle lenses while having highoptical performance.

Examples of the camera optical lens 10 of the present disclosure aredescribed below. The symbols recorded in each example will be describedas follows. The focal length, on-axis distance, curvature radius,on-axis thickness, inflexion point position, and arrest point positionare all in units of mm.

TTL: total optical length (on-axis distance from the object side surfaceof the first lens L1 to the image plane Si of the camera optical lensalong the optic axis) in mm.

F number (FNO): a ratio of an effective focal length of the cameraoptical lens to an entrance pupil diameter of the camera optical lens.

In addition, inflexion points and/or arrest points can be arranged on atleast one of the object side surface and the image side surface of eachlens, so as to satisfy the demand for the high quality imaging. Thespecific implementations can be referred to the description below.

The design data of the camera optical lens 10 shown in FIG. 1 is listedbelow.

Table 1 includes the curvature radius of the object side surface and thecurvature radius R of the image side surface of each of the first lensL1 to the fifth lens L5, which constitute the camera optical lens 10 inthe Embodiment 1 of the present disclosure, the on-axis thickness ofeach lens, the distance d between adjacent lenses, refractive index ndand abbe number vd. It should be noted that R and d are both in units ofmillimeter (mm).

TABLE 1 R d nd vd S1 ∞ d0= −0.568 R1 2.821 d1= 0.329 nd1 1.6359 v1 23.82R2 2.210 d2= 0.248 R3 16.331 d3= 0.608 nd2 1.5450 v2 55.81 R4 −1.392 d4=0.072 R5 −100.000 d5= 0.230 nd3 1.6610 v3 20.53 R6 3.472 d6= 0.214 R7−2.857 d7= 0.940 nd4 1.5450 v4 55.81 R8 −0.705 d8= 0.049 R9 1.177 d9=0.429 nd5 1.6153 v5 25.94 R10 0.542 d10= 0.500 R11 ∞ d11= 0.210 ndg1.5168 vg 64.17 R12 ∞ d12= 0.411

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of an object side surface of the optical filterGF;

R12: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the cameraoptical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 R1 −2.1081E+01  3.8077E−01 −2.8273E−01 1.6418E−01 5.6056E+00−3.2425E+01 R2 −7.7837E+01  1.3421E+00 −3.8014E+00 3.5506E+00 1.7163E+02−1.6321E+03 R3  8.5153E+01  9.5353E−03 −9.4210E−01 2.6541E+01−5.0372E+02   5.3040E+03 R4  1.5546E−01 −6.7573E−01  2.0032E+008.7440E+00 −1.7287E+02   1.0355E+03 R5  9.9000E+01 −1.1826E+00 6.2834E+00 −4.6240E+01  2.9414E+02 −1.3312E+03 R6  1.1858E+01−6.9770E−01  2.7558E+00 −1.4532E+01  6.2096E+01 −1.8768E+02 R7 6.2730E+00  1.6245E−01 −3.3978E−01 1.0313E+00 −2.5720E+00   9.9658E+00R8 −1.2415E+00 −6.2169E−02  1.7238E+00 −8.7316E+00  2.4265E+01−4.2728E+01 R9 −1.9938E+01  1.1602E−01 −8.2410E−01 1.5866E+00−1.9346E+00   1.5442E+00 R10 −3.8010E+00 −1.9758E−01  1.3056E−01−6.0779E−02  9.2404E−03  9.3109E−03 Aspherical surface coefficients A14A16 A18 A20 R1  9.1716E+01 −1.4604E+02  1.2560E+02 −4.5831E+01 R2 7.7969E+03 −2.1647E+04  3.3447E+04 −2.2639E+04 R3 −3.4173E+04 1.3399E+05 −2.9643E+05  2.8475E+05 R4 −3.5470E+03  7.4105E+03−8.7885E+03  4.5063E+03 R5  3.7926E+03 −6.3834E+03  5.7971E+03−2.1886E+03 R6  3.5995E+02 −4.1341E+02  2.6063E+02 −6.9650E+01 R7−3.0734E+01  4.7841E+01 −3.4725E+01  9.5049E+00 R8  4.8812E+01−3.4938E+01  1.4164E+01 −2.4626E+00 R9 −7.8064E−01  2.2314E−01−2.7624E−02  2.8427E−04 R10 −7.8457E−03  2.7673E−03 −4.8378E−04 3.4128E−05

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are aspheric surface coefficients.

IH: Image Heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (5)where x is a vertical distance between a point on an aspherical curveand the optic axis, and y is an aspherical depth (a vertical distancebetween a point on an aspherical surface, having a distance x from theoptic axis, and a surface tangent to a vertex of the aspherical surfaceon the optic axis).

In the present embodiment, an aspheric surface of each lens surface usesthe aspheric surfaces shown in the above condition (5). However, thepresent disclosure is not limited to the aspherical polynomial formshown in the condition (5).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 of the presentembodiment. P1R1 and P1R2 represent the object side surface and theimage side surface of the first lens L1, respectively; P2R1 and P2R2represent the object side surface and the image side surface of thesecond lens L2, respectively; P3R1 and P3R2 represent the object sidesurface and the image side surface of the third lens L3, respectively;P4R1 and P4R2 represent the object side surface and the image sidesurface of the fourth lens L4, respectively; and P5R1 and P5R2 representthe object side surface and the image side surface of the fifth lens L5,respectively. The data in the column “inflexion point position” refersto vertical distances from inflexion points arranged on each lenssurface to the optic axis of the camera optical lens 10. The data in thecolumn “arrest point position” refers to vertical distances from arrestpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10.

TABLE 3 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.815 / P1R2 1 0.575 / P2R1 1 0.285 / P2R20 / / P3R1 1 0.685 / P3R2 2 0.245 0.785 P4R1 2 0.805 0.965 P4R2 1 0.955/ P5R1 2 0.405 1.335 P5R2 2 0.465 1.865

TABLE 4 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 1 0.395 P2R2 0 / P3R1 0 / P3R2 1 0.475 P4R1 0 / P4R2 0 / P5R1 10.805 P5R2 1 1.265

Table 13 below further lists various values of Embodiments 1, 2 and 3and parameters which are specified in the above conditions.

As shown in Table 3, Embodiment 1 satisfies the various conditions.

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 435 nm after passing the camera optical lens 10. FIG. 4illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 10, in whicha field curvature S is a field curvature in a sagittal direction and Tis a field curvature in a tangential direction.

In the present embodiment, the entrance pupil diameter ENPD of thecamera optical lens 10 is 0.959 mm. The image height IH is 2.300 mm. TheFOV (field of view) along a diagonal direction is 97.80°. Thus, thecamera optical lens 10 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while the on-axis and off-axis aberrationsare sufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 2

FIG. 5 is a structural schematic diagram of the camera optical lens 20in Embodiment 2. Embodiment 2 is basically the same as Embodiment 1 andinvolves symbols having the same meanings as Embodiment 1, and the sameportions will not be repeated. Only differences therebetween will bedescribed in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0= −0.572 R1 2.781 d1= 0.332 nd1 1.6359 v1 23.82R2 2.239 d2= 0.240 R3 8.462 d3= 0.750 nd2 1.5450 v2 55.81 R4 −1.124 d4=0.050 R5 −3.030 d5= 0.220 nd3 1.6610 v3 20.53 R6 6.121 d6= 0.175 R7−2.730 d7= 0.919 nd4 1.5450 v4 55.81 R8 −0.830 d8= 0.040 R9 0.727 d9=0.316 nd5 1.6153 v5 25.94 R10 0.469 d10= 0.637 R11 ∞ d11= 0.210 ndg1.5168 vg 64.17 R12 ∞ d12= 0.411

Table 6 shows aspheric surface data of respective lenses in the cameraoptical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 R1 −2.0792E+01 3.2986E−01  2.4322E−01 −3.3218E+00   1.9649E+01−6.8870E+01  R2 −4.9804E+01 1.1692E+00 −6.1779E+00 7.5834E+01−7.0724E+02 4.4523E+03 R3 −1.3884E+01 −4.3954E−02   4.0426E+00−1.1710E+02   1.8688E+03 −1.8392E+04  R4 −3.1485E+00 1.4549E+00−1.7595E+01 1.2078E+02 −5.7067E+02 1.8172E+03 R5  1.1427E+01 1.8026E+00−1.7326E+01 1.0246E+02 −4.0271E+02 1.0588E+03 R6  3.4975E+01 6.3854E−01−5.7980E+00 2.5088E+01 −6.9775E+01 1.3016E+02 R7  5.7126E+00 7.0133E−01−3.1130E+00 9.8937E+00 −2.4734E+01 4.6976E+01 R8 −1.2059E+00−3.0910E−02   1.1816E+00 −5.1037E+00   1.0927E+01 −1.3849E+01  R9−5.1565E+00 2.3200E−01 −8.7693E−01 1.1505E+00 −9.6531E−01 5.4158E−01 R10−2.7007E+00 −6.4641E−02  −2.0333E−01 3.3324E−01 −2.8550E−01 1.5571E−01Aspherical surface coefficients A14 A16 A18 A20 R1  1.5265E+02−2.0885E+02   1.6131E+02 −5.4191E+01  R2 −1.7995E+04 4.4692E+04−6.1990E+04 3.6481E+04 R3  1.1231E+05 −4.1418E+05   8.4135E+05−7.1994E+05  R4 −3.8863E+03 5.3607E+03 −4.3068E+03 1.5289E+03 R5−1.8572E+03 2.0807E+03 −1.3363E+03 3.7314E+02 R6 −1.6353E+02 1.3269E+02−6.2715E+01 1.3104E+01 R7 −5.9386E+01 4.5254E+01 −1.8450E+01 3.0158E+00R8  1.0516E+01 −4.4951E+00   9.4731E−01 −6.9280E−02  R9 −1.9561E−014.1241E−02 −4.0862E−03 8.5695E−05 R10 −5.5263E−02 1.2294E−02 −1.5536E−038.5045E−05

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20.

TABLE 7 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.815 / P1R2 1 0.575 / P2R1 1 0.355 / P2R20 / / P3R1 1 0.755 / P3R2 2 0.405 0.935 P4R1 2 0.705 0.825 P4R2 1 0.925/ P5R1 2 0.515 1.505 P5R2 2 0.525 1.905

TABLE 8 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 0 / P3R1 0 / P3R2 1 0.725 P4R1 0 / P4R2 0 / P5R1 1 1.025P5R2 1 1.345

Table 13 below further lists various values of Embodiment 2 andparameters which are specified in the above conditions. Obviously, thecamera optical lens of the present embodiment satisfies the variousconditions.

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm, and 435 nm after passing the camera optical lens 20. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20, in whicha field curvature S is a field curvature in a sagittal direction and Tis a field curvature in a tangential direction.

In the present embodiment, the entrance pupil diameter ENPD of thecamera optical lens 20 is 0.941 mm. The image height IH is 2.300 mm. TheFOV (field of view) along a diagonal direction is 97.80°. Thus, thecamera optical lens 20 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while the on-axis and off-axis aberrationsare sufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 3

FIG. 9 is a structural schematic diagram of the camera optical lens 30in Embodiment 3. Embodiment 3 is basically the same as Embodiment 1 andinvolves symbols having the same meanings as Embodiment 1, and the sameportions will not be repeated. Only differences therebetween will bedescribed in the following.

In the present embodiment, the object side surface of the third lens L3is convex at the paraxial region.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0= −0.569 R1 3.408 d1= 0.326 nd1 1.6359 v1 23.82R2 3.047 d2= 0.230 R3 4.825 d3= 0.581 nd2 1.5450 v2 55.81 R4 −3.300 d4=0.082 R5 2177.491 d5= 0.304 nd3 1.6610 v3 20.53 R6 3.575 d6= 0.100 R7−4.575 d7= 0.896 nd4 1.5450 v4 55.81 R8 −0.764 d8= 0.040 R9 1.429 d9=0.563 nd5 1.6153 v5 25.94 R10 0.694 d10= 0.490 R11 ∞ d11= 0.210 ndg1.5168 vg 64.17 R12 ∞ d12= 0.411

Table 10 shows aspheric surface data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 R1 −3.0928E+01  3.3366E−01 1.5886E−01 −2.9833E+00  1.7657E+01−5.7544E+01  R2 −2.7169E+01  8.3854E−01 −5.2058E+00   7.8654E+01−7.5247E+02 4.6145E+03 R3  6.5175E+01  6.7478E−02 −8.8803E−01  2.0752E+01 −5.3656E+02 7.6807E+03 R4  7.2805E+00 −1.0773E+00 3.2150E+00−9.0955E+00 −1.0964E+01 1.5016E+02 R5  9.9000E+01 −1.7728E+00 8.5483E+00−7.6910E+01  5.5793E+02 −2.7194E+03  R6  2.0326E+00 −7.4097E−011.3197E+00  1.5459E−01 −8.7191E+00 2.7359E+01 R7 −1.0927E+00  2.0263E−01−1.6180E+00   9.4483E+00 −2.9039E+01 5.3066E+01 R8 −9.3892E−01−2.2111E−01 2.9500E+00 −1.3401E+01  3.6510E+01 −6.4278E+01  R9−3.4140E+01  2.7253E−01 −1.0934E+00   2.0608E+00 −2.7763E+00 2.6121E+00R10 −4.2871E+00 −1.1962E−01 8.7831E−02 −1.0361E−01  9.5673E−02−5.6839E−02  Aspherical surface coefficients A14 A16 A18 A20 R1 1.1366E+02 −1.3478E+02   8.8203E+01 −2.4656E+01  R2 −1.7891E+044.2437E+04 −5.6218E+04 3.1787E+04 R3 −6.3927E+04 3.0606E+05 −7.8406E+058.3260E+05 R4 −6.3359E+02 1.8021E+03 −3.0425E+03 2.1294E+03 R5 8.1801E+03 −1.4402E+04   1.3499E+04 −5.1307E+03  R6 −5.8431E+018.4883E+01 −6.9060E+01 2.3024E+01 R7 −6.1535E+01 4.2698E+01 −1.4433E+011.0926E+00 R8  7.3831E+01 −5.3114E+01   2.1565E+01 −3.7421E+00  R9−1.6367E+00 6.3351E−01 −1.3404E−01 1.1672E−02 R10  2.0831E−02−4.5612E−03   5.4606E−04 −2.7353E−05 

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30.

TABLE 11 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 / / P1R2 0 / / P2R1 1 0.415 / P2R2 0 / /P3R1 0 / / P3R2 1 0.205 / P4R1 2 0.435 0.595 P4R2 1 0.925 / P5R1 2 0.4751.305 P5R2 2 0.535 1.895

TABLE 12 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 0 / P3R1 0 / P3R2 1 0.385 P4R1 0 / P4R2 0 / P5R1 1 0.845P5R2 1 1.325

Table 13 below further lists various values of Embodiment 3 and valuescorresponding to parameters which are specified in the above conditions.Obviously, the camera optical lens of the present embodiment satisfiesthe various conditions.

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 435 nm after passing the camera optical lens 30. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 30, in whicha field curvature S is a field curvature in a sagittal direction and Tis a field curvature in a tangential direction.

In the present embodiment, the entrance pupil diameter ENPD of thecamera optical lens 30 is 0.937 mm. The image height IH is 2.300 mm. TheFOV (field of view) along a diagonal direction is 97.80°. Thus, thecamera optical lens 30 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while the on-axis and off-axis aberrationsare sufficiently corrected, thereby leading to better opticalcharacteristics.

Table 13 below further lists various values of Embodiment 1, Embodiment2, and Embodiment 3 and values corresponding to parameters which arespecified in the above conditions.

TABLE 13 Parameters and Conditions Embodiment 1 Embodiment 2 Embodiment3 f2/f 1.22 0.96 1.91 f3/f −2.57 −1.55 −2.79 R7/R8 4.05 3.29 5.99 d3/d52.64 3.41 1.91 f 1.955 1.949 1.925 f1 −20.147 −23.589 −69.368 f2 2.3751.867 3.677 f3 −5.029 −3.011 −5.371 f4 1.482 1.862 1.548 f5 −2.188−4.008 −3.081 f12 2.740 2.067 4.013 FNO 2.04 2.07 2.05 TTL 4.240 4.3004.233 FOV 97.80° 97.80° 97.80° IH 2.300 2.300 2.300

The above are some embodiments of the present disclosure. It should beunderstood that, those of ordinary skill in the art can makeimprovements without departing from the inventive concept of the presentdisclosure, and these improvements shall fall within the scope of thepresent disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side: a first lens having a negative refractive power;a second lens having a positive refractive power; a third lens having anegative refractive power; a fourth lens having a positive refractivepower; and a fifth lens having a negative refractive power, wherein thecamera optical lens satisfies following conditions:0.95≤f2/f≤2.00;−2.80≤f3/f≤−1.50;3.20≤R7/R8≤6.00;4.12≤(R1+R2)/(R1−R2)≤26.82; and1.80≤d3/d5≤3.50, where f denotes a focal length of the camera opticallens; f2 denotes a focal length of the second lens; f3 denotes a focallength of the third lens; R1 denotes a curvature radius of an objectside surface of the first lens; R2 denotes a curvature radius of animage side surface of the first lens; R7 denotes a curvature radius ofan object side surface of the fourth lens; R8 denotes a curvature radiusof an image side surface of the fourth lens; d3 denotes an on-axisthickness of the second lens; and d5 denotes an on-axis thickness of thethird lens.
 2. The camera optical lens as described in claim 1, furthersatisfying a following condition:1.50≤d7/d9≤3.00, where d7 denotes an on-axis thickness of the fourthlens; and d9 denotes an on-axis thickness of the fifth lens.
 3. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:−72.07≤f1/f≤−6.87; and0.04≤d1/TTL≤0.12, where f1 denotes a focal length of the first lens; d1denotes an on-axis thickness of the first lens; and TTL denotes a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 4. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:0.09≤(R3+R4)/(R3−R4)≤1.26; and0.07≤d3/TTL≤0.26, where R3 denotes a curvature radius of an object sidesurface of the second lens; R4 denotes a curvature radius of an imageside surface of the second lens; and TTL denotes a total optical lengthfrom the object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 5. The camera optical lens asdescribed in claim 1, further satisfying following conditions:−0.68≤(R5+R6)/(R5−R6)≤1.50; and0.03≤d5/TTL≤0.11, where R5 denotes a curvature radius of an object sidesurface of the third lens; R6 denotes a curvature radius of an imageside surface of the third lens; and TTL denotes a total optical lengthfrom the object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 6. The camera optical lens asdescribed in claim 1, further satisfying following conditions:0.38≤f4/f≤1.43;0.70≤(R7+R8)/(R7−R8)≤2.81; and0.11≤d7/TTL≤0.33, where f4 denotes a focal length of the fourth lens; d7denotes an on-axis thickness of the fourth lens; and TTL denotes a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 7. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:−4.11≤f5/f≤−0.75;1.35≤(R9+R10)/(R9−R10)≤6.95; and0.04≤d9/TTL≤0.20, where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of an object side surface of the fifth lens;R10 denotes a curvature radius of an image side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 8. Thecamera optical lens as described in claim 1, further satisfying afollowing condition:FNO≤2.1, where FNO denotes an F number of the camera optical lens. 9.The camera optical lens as described in claim 1, further satisfying afollowing condition:FOV≥97°, where FOV denotes a field of view of the camera optical lens.10. The camera optical lens as described in claim 1, further satisfyinga following condition:0.53≤f12/f≤3.13, where f12 denotes a combined focal length of the firstlens and the second lens.